Browse-MCP Context7 Plugin

A plugin for browse-mcp that provides up-to-date library/framework documentation through the Context7 service.

Features

• Semantic Search: Search across library documentation using natural language queries
• Up-to-date Content: Get the latest documentation directly from source repositories
• Code Examples: Retrieve relevant code snippets and examples
• Wide Library Support: Access documentation for popular libraries and frameworks

Installation

From PyPI (when published)

pip install browse-mcp-plugin-context7

From Source

cd backend/plugins/browse-mcp-plugin-context7
pip install -e .

Configuration

Set the optional API key for higher rate limits:

export CONTEXT7_API_KEY="your_api_key"

Without an API key, the plugin will still work but may be subject to rate limiting.

Usage

Once installed, the searcher is automatically discovered by browse-mcp.

Basic Search

from browse_mcp import paper_search

# Search for Next.js documentation
results = paper_search([
    {"searcher": "context7", "query": "next.js", "max_results": 5}
])

# Search for React hooks documentation
results = paper_search([
    {"searcher": "context7", "query": "react hooks", "max_results": 3}
])

Topic-Filtered Search

# Search with topic filter
results = paper_search([
    {
        "searcher": "context7",
        "query": "next.js",
        "topic": "routing",
        "max_results": 5
    }
])

Direct Library Search

# Search within a specific library
results = paper_search([
    {
        "searcher": "context7",
        "query": "data fetching",
        "library_id": "/vercel/next.js",
        "max_results": 5
    }
])

Multiple Library Search

# Search across multiple libraries
results = paper_search([
    {"searcher": "context7", "query": "react", "max_results": 3},
    {"searcher": "context7", "query": "vue", "max_results": 3},
    {"searcher": "context7", "query": "svelte", "max_results": 3},
])

Search Parameters

Parameter	Type	Default	Description
query	str	required	Search query (library name or topic)
max_results	int	5	Maximum number of results to return
tokens	int	10000	Maximum tokens per documentation result
topic	str	None	Optional topic filter (e.g., "routing", "authentication")
library_id	str	None	Optional specific library ID to search within

Content ID Format

When using download() and read() methods, the content ID format is:

• {library_id} - e.g., /vercel/next.js
• {library_id}:{topic} - e.g., /vercel/next.js:routing

LibraryDoc Data Structure

The searcher returns LibraryDoc objects with the following fields:

Field	Type	Description
library_id	str	Context7 library ID (e.g., "/vercel/next.js")
library_name	str	Human-readable library name
title	str	Documentation section title
content	str	Documentation text content
code_examples	List[str]	Code snippets and examples
url	str	Source URL for the documentation
version	Optional[str]	Library version
topic	Optional[str]	Topic filter used
description	Optional[str]	Library description
trust_score	Optional[float]	Context7 trust score
extra	Dict	Additional metadata

Controlling the Searcher

Use environment variables to control whether the searcher is enabled:

# Enable only context7 and other specific sources
export BROWSE_MCP_ENABLED_SOURCES="context7,arxiv"

# Or disable specific sources while keeping context7
export BROWSE_MCP_DISABLED_SOURCES="twitter"

Development

Project Structure

context7_searcher/
├── __init__.py      # Package initialization and exports
├── types.py         # LibraryDoc dataclass definition
├── context7.py      # Main Context7Searcher implementation
└── client.py        # HTTP client for Context7 API

Running Tests

cd backend/plugins/browse-mcp-plugin-context7
pytest

Code Style

The project uses ruff for linting and formatting:

ruff check context7_searcher/
ruff format context7_searcher/

Error Handling

The plugin handles errors gracefully:

• API Errors: Logged and reported, but don't crash the search
• Rate Limits: Logged with warnings; consider setting CONTEXT7_API_KEY
• Missing Libraries: Returns empty results with informative logging
• Network Issues: Caught and logged with appropriate error messages

Context7 API

This plugin communicates with Context7's API to:

1. Resolve Library ID: Convert library names to Context7-compatible IDs
2. Get Library Docs: Fetch documentation for a specific library
3. Search Docs: Perform semantic search within library documentation

For more information about Context7, visit context7.com.

License

MIT License - See LICENSE file for details.

Contributing

Contributions are welcome! Please:

1. Fork the repository
2. Create a feature branch
3. Add tests for new features
4. Submit a pull request

Related Projects

• browse-mcp - Main browse-mcp project
• Context7 - Documentation service provider